We're dividing 84258190 by 124 
We want to divide 84258190 by 124.

On to step 1:
124 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 124

Moving on to step 2:
If we divide 84 by 124, we get 0 and a remainder of 84.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 84, we end up with 84.
Take the next digit (2) from the dividend and append it to 84, then repeat: 842 / 124

Going ahead to step 3:
842 divided by 124 is 6 with a remainder of 98.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 744 from 842 and we're left with 98.
Bring next digit (5) of the dividend behind the 98 and repeat the process: 985 / 124

On to step 4:
124 can be fit into 985 7 times, resulting in a remainder of 117.
The number 7 becomes the next digit in our result. 
Result so far: 67.0
Deduct 868 from 985 and we're left with 117.
Fetch the next digit (8) from the dividend, attach it to 117 and continue: 1178 / 124

Going ahead to step 5:
When dividing 1178 by 124, we get 9 with a remainder of 62.
The next digit of our result is 9. 
Result so far: 679.0
Subtract 1116 from 1178 to get 62.
Fetch the next digit (1) from the dividend, attach it to 62 and continue: 621 / 124

Step 6:
If we divide 621 by 124, we get 5 and a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 6795.0
The remainder is 1 after subtracting 620 from 621.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 124

On to step 7:
When dividing 19 by 124, we get 0 with a remainder of 19.
The next digit of our result is 0. 
Result so far: 67950.0
Deduct 0 from 19 and we're left with 19.
Grab the next digit (0) from the dividend, add it to 19, then carry on: 190 / 124

Let's proceed to step 8:
If we divide 190 by 124, we get 1 and a remainder of 66.
Record the quotient 1 as the next digit in the result. 
Result so far: 679501.0
Subtracting 124 from 190 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 9:
When dividing 660 by 124, we get 5 with a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 679501.5
Deduct 620 from 660 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 10:
400 divided by 124 is 3 with a remainder of 28.
The next digit of our result is 3. 
Result so far: 679501.53
The remainder is 28 after subtracting 372 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 11:
The number 124 fits into 280 2 times, leaving a remainder of 32.
The number 2 becomes the next digit in our result. 
Result so far: 679501.532
If we take 248 away from 280, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 12:
320 divided by 124 is 2 with a remainder of 72.
Use 2 as the next digit of our solution. 
Result so far: 679501.5322
Deduct 248 from 320 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

In conclusion, the division gives 679501.5322 with a balance of 0.00072.